title: Plasma triiodothyronine response to thyrotropin releasing hormone, thyrotropin and propranolol in old age.
mesh_terms: D000328:Adult; D000368:Aged; D000375:Aging; D005260:Female; D006801:Humans; D008297:Male; D011433:Propranolol / Q000494:pharmacology*; D013972:Thyrotropin / Q000494:pharmacology*; D013973:Thyrotropin-Releasing Hormone / Q000494:pharmacology*; D014284:Triiodothyronine / Q000097:blood*
chemical_list: D014284:Triiodothyronine; D013973:Thyrotropin-Releasing Hormone; D013972:Thyrotropin; D011433:Propranolol